src/mathed/InsetMathNest.cpp

   1 /**
   2  * \file InsetMathNest.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author André Pönitz
   7  *
   8  * Full author contact details are available in file CREDITS.
   9  */
  10
  11 #include <config.h>
  12
  13 #include "InsetMathNest.h"
  14
  15 #include "InsetMathArray.h"
  16 #include "InsetMathAMSArray.h"
  17 #include "InsetMathBig.h"
  18 #include "InsetMathBox.h"
  19 #include "InsetMathBrace.h"
  20 #include "InsetMathChar.h"
  21 #include "InsetMathColor.h"
  22 #include "InsetMathComment.h"
  23 #include "InsetMathDelim.h"
  24 #include "InsetMathEnsureMath.h"
  25 #include "InsetMathHull.h"
  26 #include "InsetMathRef.h"
  27 #include "InsetMathScript.h"
  28 #include "InsetMathSpace.h"
  29 #include "InsetMathSymbol.h"
  30 #include "InsetMathUnknown.h"
  31 #include "MathAutoCorrect.h"
  32 #include "MathCompletionList.h"
  33 #include "MathData.h"
  34 #include "MathFactory.h"
  35 #include "InsetMathMacro.h"
  36 #include "InsetMathMacroArgument.h"
  37 #include "MathParser.h"
  38 #include "MathStream.h"
  39 #include "MathSupport.h"
  40
  41 #include "Buffer.h"
  42 #include "BufferParams.h"
  43 #include "BufferView.h"
  44 #include "CoordCache.h"
  45 #include "Cursor.h"
  46 #include "CutAndPaste.h"
  47 #include "DispatchResult.h"
  48 #include "Encoding.h"
  49 #include "FuncRequest.h"
  50 #include "FuncStatus.h"
  51 #include "LaTeXFeatures.h"
  52 #include "LyX.h"
  53 #include "LyXRC.h"
  54 #include "MetricsInfo.h"
  55 #include "OutputParams.h"
  56 #include "TexRow.h"
  57 #include "Text.h"
  58
  59 #include "frontends/Application.h"
  60 #include "frontends/Clipboard.h"
  61 #include "frontends/Painter.h"
  62 #include "frontends/Selection.h"
  63
  64 #include "support/debug.h"
  65 #include "support/docstream.h"
  66 #include "support/gettext.h"
  67 #include "support/lassert.h"
  68 #include "support/lstrings.h"
  69 #include "support/textutils.h"
  70
  71 #include <algorithm>
  72 #include <sstream>
  73
  74 using namespace std;
  75 using namespace lyx::support;
  76
  77 namespace lyx {
  78
  79 using cap::copySelection;
  80 using cap::grabAndEraseSelection;
  81 using cap::cutSelection;
  82 using cap::replaceSelection;
  83 using cap::selClearOrDel;
  84
  85
  86 InsetMathNest::InsetMathNest(Buffer * buf, idx_type nargs)
  87         : InsetMath(buf), cells_(nargs), lock_(false)
  88 {
  89         setBuffer(*buf);
  90 }
  91
  92
  93 InsetMathNest::InsetMathNest(InsetMathNest const & inset)
  94         : InsetMath(inset), cells_(inset.cells_), lock_(inset.lock_)
  95 {}
  96
  97
  98 InsetMathNest::~InsetMathNest()
  99 {
 100         map<BufferView const *, bool>::iterator it = mouse_hover_.begin();
 101         map<BufferView const *, bool>::iterator end = mouse_hover_.end();
 102         for (; it != end; ++it)
 103                 if (it->second)
 104                         it->first->clearLastInset(this);
 105 }
 106
 107
 108 InsetMathNest & InsetMathNest::operator=(InsetMathNest const & inset)
 109 {
 110         cells_ = inset.cells_;
 111         lock_ = inset.lock_;
 112         mouse_hover_.clear();
 113         InsetMath::operator=(inset);
 114         return *this;
 115 }
 116
 117
 118 void InsetMathNest::setBuffer(Buffer & buffer)
 119 {
 120         InsetMath::setBuffer(buffer);
 121         for (MathData & data : cells_)
 122                 data.setBuffer(buffer);
 123 }
 124
 125
 126 InsetMath::idx_type InsetMathNest::nargs() const
 127 {
 128         return cells_.size();
 129 }
 130
 131
 132 void InsetMathNest::cursorPos(BufferView const & bv,
 133                 CursorSlice const & sl, bool /*boundary*/,
 134                 int & x, int & y) const
 135 {
 136 // FIXME: This is a hack. Ideally, the coord cache should not store
 137 // absolute positions, but relative ones. This would mean to call
 138 // setXY() not in MathData::draw(), but in the parent insets' draw()
 139 // with the correctly adjusted x,y values. But this means that we'd have
 140 // to touch all (math)inset's draw() methods. Right now, we'll store
 141 // absolute value, and make them here relative, only to make them
 142 // absolute again when actually drawing the cursor. What a mess.
 143         LASSERT(&sl.inset() == this, return);
 144         MathData const & ar = sl.cell();
 145         CoordCache const & coord_cache = bv.coordCache();
 146         if (!coord_cache.getArrays().has(&ar)) {
 147                 // this can (semi-)legally happen if we just created this cell
 148                 // and it never has been drawn before. So don't ASSERT.
 149                 //lyxerr << "no cached data for array " << &ar << endl;
 150                 x = 0;
 151                 y = 0;
 152                 return;
 153         }
 154         Point const pt = coord_cache.getArrays().xy(&ar);
 155         if (!coord_cache.getInsets().has(this)) {
 156                 // same as above
 157                 //lyxerr << "no cached data for inset " << this << endl;
 158                 x = 0;
 159                 y = 0;
 160                 return;
 161         }
 162         Point const pt2 = coord_cache.getInsets().xy(this);
 163         //lyxerr << "retrieving position cache for MathData "
 164         //      << pt.x_ << ' ' << pt.y_ << endl;
 165         x = pt.x_ - pt2.x_ + ar.pos2x(&bv, sl.pos());
 166         y = pt.y_ - pt2.y_;
 167 //      lyxerr << "pt.y_ : " << pt.y_ << " pt2_.y_ : " << pt2.y_
 168 //              << " asc: " << ascent() << "  des: " << descent()
 169 //              << " ar.asc: " << ar.ascent() << " ar.des: " << ar.descent() << endl;
 170         // move cursor visually into empty cells ("blue rectangles");
 171         if (ar.empty()) {
 172                 Dimension const dim = coord_cache.getArrays().dim(&ar);
 173                 x += dim.wid / 3;
 174         }
 175 }
 176
 177
 178 void InsetMathNest::cellsMetrics(MetricsInfo const & mi) const
 179 {
 180         MetricsInfo m = mi;
 181         for (auto const & cell : cells_) {
 182                 Dimension dim;
 183                 cell.metrics(m, dim);
 184         }
 185 }
 186
 187
 188 void InsetMathNest::updateBuffer(ParIterator const & it, UpdateType utype, bool const deleted)
 189 {
 190         for (idx_type i = 0, n = nargs(); i != n; ++i)
 191                 cell(i).updateBuffer(it, utype, deleted);
 192 }
 193
 194
 195
 196 bool InsetMathNest::idxNext(Cursor & cur) const
 197 {
 198         LASSERT(&cur.inset() == this, return false);
 199         if (cur.idx() == cur.lastidx())
 200                 return false;
 201         ++cur.idx();
 202         cur.pos() = 0;
 203         return true;
 204 }
 205
 206
 207 bool InsetMathNest::idxForward(Cursor & cur) const
 208 {
 209         return idxNext(cur);
 210 }
 211
 212
 213 bool InsetMathNest::idxPrev(Cursor & cur) const
 214 {
 215         LASSERT(&cur.inset() == this, return false);
 216         if (cur.idx() == 0)
 217                 return false;
 218         --cur.idx();
 219         cur.pos() = lyxrc.mac_like_cursor_movement ? cur.lastpos() : 0;
 220         return true;
 221 }
 222
 223
 224 bool InsetMathNest::idxBackward(Cursor & cur) const
 225 {
 226         return idxPrev(cur);
 227 }
 228
 229
 230 bool InsetMathNest::idxFirst(Cursor & cur) const
 231 {
 232         LASSERT(&cur.inset() == this, return false);
 233         if (nargs() == 0)
 234                 return false;
 235         cur.idx() = firstIdx();
 236         cur.pos() = 0;
 237         return true;
 238 }
 239
 240
 241 bool InsetMathNest::idxLast(Cursor & cur) const
 242 {
 243         LASSERT(&cur.inset() == this, return false);
 244         if (nargs() == 0)
 245                 return false;
 246         cur.idx() = lastIdx();
 247         cur.pos() = cur.lastpos();
 248         return true;
 249 }
 250
 251
 252 void InsetMathNest::dump() const
 253 {
 254         odocstringstream oss;
 255         otexrowstream ots(oss);
 256         WriteStream os(ots);
 257         os << "---------------------------------------------\n";
 258         write(os);
 259         os << "\n";
 260         for (idx_type i = 0, n = nargs(); i != n; ++i)
 261                 os << cell(i) << "\n";
 262         os << "---------------------------------------------\n";
 263         lyxerr << to_utf8(oss.str());
 264 }
 265
 266
 267 void InsetMathNest::draw(PainterInfo &, int, int) const
 268 {
 269 #if 0
 270         if (lock_)
 271                 pi.pain.fillRectangle(x, y - ascent(), width(), height(),
 272                                         Color_mathlockbg);
 273 #endif
 274 }
 275
 276
 277 void InsetMathNest::validate(LaTeXFeatures & features) const
 278 {
 279         for (idx_type i = 0; i < nargs(); ++i)
 280                 cell(i).validate(features);
 281 }
 282
 283
 284 void InsetMathNest::replace(ReplaceData & rep)
 285 {
 286         for (idx_type i = 0; i < nargs(); ++i)
 287                 cell(i).replace(rep);
 288 }
 289
 290
 291 bool InsetMathNest::contains(MathData const & ar) const
 292 {
 293         for (idx_type i = 0; i < nargs(); ++i)
 294                 if (cell(i).contains(ar))
 295                         return true;
 296         return false;
 297 }
 298
 299
 300 bool InsetMathNest::lock() const
 301 {
 302         return lock_;
 303 }
 304
 305
 306 void InsetMathNest::lock(bool l)
 307 {
 308         lock_ = l;
 309 }
 310
 311
 312 bool InsetMathNest::isActive() const
 313 {
 314         return nargs() > 0;
 315 }
 316
 317
 318 MathData InsetMathNest::glue() const
 319 {
 320         MathData ar;
 321         for (size_t i = 0; i < nargs(); ++i)
 322                 ar.append(cell(i));
 323         return ar;
 324 }
 325
 326
 327 void InsetMathNest::write(WriteStream & os) const
 328 {
 329         MathEnsurer ensurer(os, currentMode() == MATH_MODE);
 330         ModeSpecifier specifier(os, currentMode(), lockedMode());
 331         docstring const latex_name = name();
 332         os << '\\' << latex_name;
 333         for (size_t i = 0; i < nargs(); ++i) {
 334                 Changer dummy = os.changeRowEntry(TexRow::mathEntry(id(),i));
 335                 os << '{' << cell(i) << '}';
 336         }
 337         if (nargs() == 0)
 338                 os.pendingSpace(true);
 339         if (lock_ && !os.latex()) {
 340                 os << "\\lyxlock";
 341                 os.pendingSpace(true);
 342         }
 343 }
 344
 345
 346 void InsetMathNest::normalize(NormalStream & os) const
 347 {
 348         os << '[' << name();
 349         for (size_t i = 0; i < nargs(); ++i)
 350                 os << ' ' << cell(i);
 351         os << ']';
 352 }
 353
 354
 355 void InsetMathNest::latex(otexstream & os, OutputParams const & runparams) const
 356 {
 357         WriteStream wi(os, runparams.moving_arg, true,
 358                         runparams.dryrun ? WriteStream::wsDryrun : WriteStream::wsDefault,
 359                         runparams.encoding);
 360         wi.strikeoutMath(runparams.inDeletedInset);
 361         if (runparams.inulemcmd) {
 362                 wi.ulemCmd(WriteStream::UNDERLINE);
 363                 if (runparams.local_font) {
 364                         FontInfo f = runparams.local_font->fontInfo();
 365                         if (f.strikeout() == FONT_ON)
 366                                 wi.ulemCmd(WriteStream::STRIKEOUT);
 367                 }
 368         }
 369         wi.canBreakLine(os.canBreakLine());
 370         Changer dummy = wi.changeRowEntry(TexRow::textEntry(runparams.lastid,
 371                                                             runparams.lastpos));
 372         write(wi);
 373         // Reset parbreak and command termination status after a math inset.
 374         os.lastChar(0);
 375         os.canBreakLine(wi.canBreakLine());
 376         os.terminateCommand(false);
 377 }
 378
 379
 380 bool InsetMathNest::setMouseHover(BufferView const * bv, bool mouse_hover)
 381         const
 382 {
 383         mouse_hover_[bv] = mouse_hover;
 384         return true;
 385 }
 386
 387
 388 bool InsetMathNest::notifyCursorLeaves(Cursor const & /*old*/, Cursor & /*cur*/)
 389 {
 390         // FIXME: look here
 391 #if 0
 392         MathData & ar = cur.cell();
 393         // remove base-only "scripts"
 394         for (pos_type i = 0; i + 1 < ar.size(); ++i) {
 395                 InsetMathScript * p = operator[](i).nucleus()->asScriptInset();
 396                 if (p && p->nargs() == 1) {
 397                         MathData ar = p->nuc();
 398                         erase(i);
 399                         insert(i, ar);
 400                         cur.adjust(i, ar.size() - 1);
 401                 }
 402         }
 403
 404         // glue adjacent font insets of the same kind
 405         for (pos_type i = 0; i + 1 < size(); ++i) {
 406                 InsetMathFont * p = operator[](i).nucleus()->asFontInset();
 407                 InsetMathFont const * q = operator[](i + 1)->asFontInset();
 408                 if (p && q && p->name() == q->name()) {
 409                         p->cell(0).append(q->cell(0));
 410                         erase(i + 1);
 411                         cur.adjust(i, -1);
 412                 }
 413         }
 414 #endif
 415         return false;
 416 }
 417
 418
 419 void InsetMathNest::handleFont
 420         (Cursor & cur, docstring const & arg, char const * const font)
 421 {
 422         handleFont(cur, arg, from_ascii(font));
 423 }
 424
 425
 426 void InsetMathNest::handleFont(Cursor & cur, docstring const & arg,
 427         docstring const & font)
 428 {
 429         cur.recordUndoSelection();
 430
 431         // this whole function is a hack and won't work for incremental font
 432         // changes...
 433         if (cur.inset().asInsetMath()->name() == font)
 434                 cur.handleFont(to_utf8(font));
 435         else
 436                 handleNest(cur, createInsetMath(font, cur.buffer()), arg);
 437 }
 438
 439
 440 void InsetMathNest::handleNest(Cursor & cur, MathAtom const & nest)
 441 {
 442         handleNest(cur, nest, docstring());
 443 }
 444
 445
 446 void InsetMathNest::handleNest(Cursor & cur, MathAtom const & nest,
 447         docstring const & arg)
 448 {
 449         CursorSlice i1 = cur.selBegin();
 450         CursorSlice i2 = cur.selEnd();
 451         if (!i1.inset().asInsetMath())
 452                 return;
 453         if (i1.idx() == i2.idx()) {
 454                 // the easy case where only one cell is selected
 455                 cur.handleNest(nest);
 456                 cur.insert(arg);
 457                 return;
 458         }
 459
 460         // multiple selected cells in a simple non-grid inset
 461         if (i1.asInsetMath()->nrows() == 0 || i1.asInsetMath()->ncols() == 0) {
 462                 for (idx_type i = i1.idx(); i <= i2.idx(); ++i) {
 463                         // select cell
 464                         cur.idx() = i;
 465                         cur.pos() = 0;
 466                         cur.resetAnchor();
 467                         cur.pos() = cur.lastpos();
 468                         cur.setSelection();
 469
 470                         // change font of cell
 471                         cur.handleNest(nest);
 472                         cur.insert(arg);
 473
 474                         // cur is in the font inset now. If the loop continues,
 475                         // we need to get outside again for the next cell
 476                         if (i + 1 <= i2.idx())
 477                                 cur.pop_back();
 478                 }
 479                 return;
 480         }
 481
 482         // the complicated case with multiple selected cells in a grid
 483         row_type r1, r2;
 484         col_type c1, c2;
 485         cap::region(i1, i2, r1, r2, c1, c2);
 486         for (row_type row = r1; row <= r2; ++row) {
 487                 for (col_type col = c1; col <= c2; ++col) {
 488                         // select cell
 489                         cur.idx() = i1.asInsetMath()->index(row, col);
 490                         cur.pos() = 0;
 491                         cur.resetAnchor();
 492                         cur.pos() = cur.lastpos();
 493                         cur.setSelection();
 494
 495                         //
 496                         cur.handleNest(nest);
 497                         cur.insert(arg);
 498
 499                         // cur is in the font inset now. If the loop continues,
 500                         // we need to get outside again for the next cell
 501                         if (col + 1 <= c2 || row + 1 <= r2)
 502                                 cur.pop_back();
 503                 }
 504         }
 505 }
 506
 507
 508 void InsetMathNest::handleFont2(Cursor & cur, docstring const & arg)
 509 {
 510         cur.recordUndoSelection();
 511         Font font;
 512         bool b;
 513         font.fromString(to_utf8(arg), b);
 514         if (font.fontInfo().color() != Color_inherit &&
 515             font.fontInfo().color() != Color_ignore)
 516                 handleNest(cur, MathAtom(new InsetMathColor(buffer_, true, font.fontInfo().color())));
 517
 518         // FIXME: support other font changes here as well?
 519 }
 520
 521 void InsetMathNest::doDispatch(Cursor & cur, FuncRequest & cmd)
 522 {
 523         //LYXERR0("InsetMathNest: request: " << cmd);
 524
 525         Parse::flags parseflg = Parse::QUIET | Parse::USETEXT;
 526
 527         FuncCode const act = cmd.action();
 528         switch (act) {
 529
 530         case LFUN_CLIPBOARD_PASTE:
 531                 parseflg |= Parse::VERBATIM;
 532                 // fall through
 533         case LFUN_PASTE: {
 534                 if (cur.currentMode() != MATH_MODE)
 535                         parseflg |= Parse::TEXTMODE;
 536                 cur.recordUndoSelection();
 537                 cur.message(_("Paste"));
 538                 replaceSelection(cur);
 539                 docstring topaste;
 540                 if (cmd.argument().empty() && !theClipboard().isInternal())
 541                         topaste = theClipboard().getAsText(frontend::Clipboard::PlainTextType);
 542                 else {
 543                         size_t n = 0;
 544                         idocstringstream is(cmd.argument());
 545                         is >> n;
 546                         topaste = cap::selection(n, buffer().params().documentClassPtr());
 547                 }
 548                 cur.niceInsert(topaste, parseflg, false);
 549                 cur.clearSelection(); // bug 393
 550                 cur.forceBufferUpdate();
 551                 cur.finishUndo();
 552                 break;
 553         }
 554
 555         case LFUN_CUT:
 556                 cur.recordUndo();
 557                 cutSelection(cur, true);
 558                 cur.message(_("Cut"));
 559                 // Prevent stale position >= size crash
 560                 // Probably not necessary anymore, see eraseSelection (gb 2005-10-09)
 561                 cur.normalize();
 562                 cur.forceBufferUpdate();
 563                 break;
 564
 565         case LFUN_COPY:
 566                 copySelection(cur);
 567                 cur.message(_("Copy"));
 568                 break;
 569
 570         case LFUN_MOUSE_PRESS:
 571                 lfunMousePress(cur, cmd);
 572                 break;
 573
 574         case LFUN_MOUSE_MOTION:
 575                 lfunMouseMotion(cur, cmd);
 576                 break;
 577
 578         case LFUN_MOUSE_RELEASE:
 579                 lfunMouseRelease(cur, cmd);
 580                 break;
 581
 582         case LFUN_FINISHED_LEFT: // in math, left is backwards
 583         case LFUN_FINISHED_BACKWARD:
 584                 cur.bv().cursor() = cur;
 585                 break;
 586
 587         case LFUN_FINISHED_RIGHT: // in math, right is forward
 588         case LFUN_FINISHED_FORWARD:
 589                 ++cur.pos();
 590                 cur.bv().cursor() = cur;
 591                 break;
 592
 593         case LFUN_WORD_RIGHT:
 594         case LFUN_WORD_LEFT:
 595         case LFUN_WORD_BACKWARD:
 596         case LFUN_WORD_FORWARD:
 597         case LFUN_CHAR_RIGHT:
 598         case LFUN_CHAR_LEFT:
 599         case LFUN_CHAR_BACKWARD:
 600         case LFUN_CHAR_FORWARD:
 601                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
 602                 // fall through
 603         case LFUN_WORD_RIGHT_SELECT:
 604         case LFUN_WORD_LEFT_SELECT:
 605         case LFUN_WORD_BACKWARD_SELECT:
 606         case LFUN_WORD_FORWARD_SELECT:
 607         case LFUN_CHAR_RIGHT_SELECT:
 608         case LFUN_CHAR_LEFT_SELECT:
 609         case LFUN_CHAR_BACKWARD_SELECT:
 610         case LFUN_CHAR_FORWARD_SELECT: {
 611                 // are we in a selection?
 612                 bool select = (act == LFUN_WORD_RIGHT_SELECT
 613                                            || act == LFUN_WORD_LEFT_SELECT
 614                                            || act == LFUN_WORD_BACKWARD_SELECT
 615                                            || act == LFUN_WORD_FORWARD_SELECT
 616                                || act == LFUN_CHAR_RIGHT_SELECT
 617                                            || act == LFUN_CHAR_LEFT_SELECT
 618                                            || act == LFUN_CHAR_BACKWARD_SELECT
 619                                            || act == LFUN_CHAR_FORWARD_SELECT);
 620                 // select words
 621                 bool word = (act == LFUN_WORD_RIGHT_SELECT
 622                              || act == LFUN_WORD_LEFT_SELECT
 623                              || act == LFUN_WORD_BACKWARD_SELECT
 624                              || act == LFUN_WORD_FORWARD_SELECT
 625                              || act == LFUN_WORD_RIGHT
 626                              || act == LFUN_WORD_LEFT
 627                              || act == LFUN_WORD_BACKWARD
 628                              || act == LFUN_WORD_FORWARD);
 629                 // are we moving forward or backwards?
 630                 // If the command was RIGHT or LEFT, then whether we're moving forward
 631                 // or backwards depends on the cursor movement mode (logical or visual):
 632                 //  * in visual mode, since math is always LTR, right -> forward,
 633                 //    left -> backwards
 634                 //  * in logical mode, the mapping is determined by the
 635                 //    reverseDirectionNeeded() function
 636
 637                 bool forward;
 638                 FuncCode finish_lfun;
 639
 640                 if (act == LFUN_CHAR_FORWARD
 641                     || act == LFUN_CHAR_FORWARD_SELECT
 642                     || act == LFUN_WORD_FORWARD
 643                     || act == LFUN_WORD_FORWARD_SELECT) {
 644                         forward = true;
 645                         finish_lfun = LFUN_FINISHED_FORWARD;
 646                 }
 647                 else if (act == LFUN_CHAR_BACKWARD
 648                          || act == LFUN_CHAR_BACKWARD_SELECT
 649                          || act == LFUN_WORD_BACKWARD
 650                          || act == LFUN_WORD_BACKWARD_SELECT) {
 651                         forward = false;
 652                         finish_lfun = LFUN_FINISHED_BACKWARD;
 653                 }
 654                 else {
 655                         bool right = (act == LFUN_CHAR_RIGHT_SELECT
 656                                                   || act == LFUN_CHAR_RIGHT
 657                                       || act == LFUN_WORD_RIGHT_SELECT
 658                                       || act == LFUN_WORD_RIGHT);
 659                         if (lyxrc.visual_cursor || !cur.reverseDirectionNeeded())
 660                                 forward = right;
 661                         else
 662                                 forward = !right;
 663
 664                         if (right)
 665                                 finish_lfun = LFUN_FINISHED_RIGHT;
 666                         else
 667                                 finish_lfun = LFUN_FINISHED_LEFT;
 668                 }
 669                 // Now that we know exactly what we want to do, let's do it!
 670                 cur.selHandle(select);
 671                 cur.clearTargetX();
 672                 cur.macroModeClose();
 673                 // try moving forward or backwards as necessary...
 674                 if (!(forward ? cur.mathForward(word) : cur.mathBackward(word))) {
 675                         // ... and if movement failed, then finish forward or backwards
 676                         // as necessary
 677                         cmd = FuncRequest(finish_lfun);
 678                         cur.undispatched();
 679                 }
 680                 break;
 681         }
 682
 683         case LFUN_DOWN:
 684         case LFUN_UP:
 685         case LFUN_PARAGRAPH_UP:
 686         case LFUN_PARAGRAPH_DOWN:
 687                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
 688                 // fall through
 689         case LFUN_DOWN_SELECT:
 690         case LFUN_UP_SELECT:
 691         case LFUN_PARAGRAPH_UP_SELECT:
 692         case LFUN_PARAGRAPH_DOWN_SELECT: {
 693                 // close active macro
 694                 if (cur.inMacroMode()) {
 695                         cur.macroModeClose();
 696                         break;
 697                 }
 698
 699                 // stop/start the selection
 700                 bool select = act == LFUN_DOWN_SELECT
 701                         || act == LFUN_UP_SELECT
 702                         || act == LFUN_PARAGRAPH_DOWN_SELECT
 703                         || act == LFUN_PARAGRAPH_UP_SELECT;
 704                 cur.selHandle(select);
 705
 706                 // go up/down
 707                 bool up = act == LFUN_UP || act == LFUN_UP_SELECT
 708                         || act == LFUN_PARAGRAPH_UP || act == LFUN_PARAGRAPH_UP_SELECT;
 709                 bool successful = cur.upDownInMath(up);
 710                 if (successful)
 711                         break;
 712
 713                 if (cur.fixIfBroken())
 714                         // FIXME: Something bad happened. We pass the corrected Cursor
 715                         // instead of letting things go worse.
 716                         break;
 717
 718                 // We did not manage to move the cursor.
 719                 cur.undispatched();
 720                 break;
 721         }
 722
 723         case LFUN_MOUSE_DOUBLE:
 724         case LFUN_WORD_SELECT:
 725                 cur.pos() = 0;
 726                 cur.bv().mouseSetCursor(cur);
 727                 cur.pos() = cur.lastpos();
 728                 cur.bv().mouseSetCursor(cur, true);
 729                 break;
 730
 731         case LFUN_MOUSE_TRIPLE:
 732                 cur.idx() = 0;
 733                 cur.pos() = 0;
 734                 cur.bv().mouseSetCursor(cur);
 735                 cur.idx() = cur.lastidx();
 736                 cur.pos() = cur.lastpos();
 737                 cur.bv().mouseSetCursor(cur, true);
 738                 break;
 739
 740         case LFUN_LINE_BEGIN:
 741                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
 742                 // fall through
 743         case LFUN_LINE_BEGIN_SELECT:
 744                 cur.selHandle(act == LFUN_WORD_BACKWARD_SELECT ||
 745                                 act == LFUN_WORD_LEFT_SELECT ||
 746                                 act == LFUN_LINE_BEGIN_SELECT);
 747                 cur.macroModeClose();
 748                 if (cur.pos() != 0) {
 749                         cur.pos() = 0;
 750                 } else if (cur.col() != 0) {
 751                         cur.idx() -= cur.col();
 752                         cur.pos() = 0;
 753                 } else if (cur.idx() != 0) {
 754                         cur.idx() = 0;
 755                         cur.pos() = 0;
 756                 } else {
 757                         cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
 758                         cur.undispatched();
 759                 }
 760                 break;
 761
 762         case LFUN_LINE_END:
 763                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
 764                 // fall through
 765         case LFUN_LINE_END_SELECT:
 766                 cur.selHandle(act == LFUN_WORD_FORWARD_SELECT ||
 767                                 act == LFUN_WORD_RIGHT_SELECT ||
 768                                 act == LFUN_LINE_END_SELECT);
 769                 cur.macroModeClose();
 770                 cur.clearTargetX();
 771                 if (cur.pos() != cur.lastpos()) {
 772                         cur.pos() = cur.lastpos();
 773                 } else if (ncols() && (cur.col() != cur.lastcol())) {
 774                         cur.idx() = cur.idx() - cur.col() + cur.lastcol();
 775                         cur.pos() = cur.lastpos();
 776                 } else if (cur.idx() != cur.lastidx()) {
 777                         cur.idx() = cur.lastidx();
 778                         cur.pos() = cur.lastpos();
 779                 } else {
 780                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 781                         cur.undispatched();
 782                 }
 783                 break;
 784
 785         case LFUN_CELL_FORWARD:
 786                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
 787                 cur.selHandle(false);
 788                 cur.clearTargetX();
 789                 cur.macroModeClose();
 790                 if (!cur.inset().idxNext(cur)) {
 791                         cur.idx() = firstIdx();
 792                         cur.pos() = 0;
 793                 }
 794                 break;
 795
 796         case LFUN_CELL_BACKWARD:
 797                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
 798                 cur.selHandle(false);
 799                 cur.clearTargetX();
 800                 cur.macroModeClose();
 801                 if (!cur.inset().idxPrev(cur)) {
 802                         cur.idx() = lastIdx();
 803                         cur.pos() = lyxrc.mac_like_cursor_movement ? cur.lastpos() : 0;
 804                 }
 805                 break;
 806
 807         case LFUN_WORD_DELETE_BACKWARD:
 808         case LFUN_CHAR_DELETE_BACKWARD:
 809                 if (cur.pos() == 0)
 810                         // May affect external cell:
 811                         cur.recordUndoInset();
 812                 else if (!cur.inMacroMode())
 813                         cur.recordUndoSelection();
 814                 // if the inset can not be removed from within, delete it
 815                 if (!cur.backspace(cmd.getArg(0) == "force")) {
 816                         FuncRequest newcmd = FuncRequest(LFUN_CHAR_DELETE_FORWARD, "force");
 817                         cur.innerText()->dispatch(cur, newcmd);
 818                 }
 819                 break;
 820
 821         case LFUN_WORD_DELETE_FORWARD:
 822         case LFUN_CHAR_DELETE_FORWARD:
 823                 if (cur.pos() == cur.lastpos())
 824                         // May affect external cell:
 825                         cur.recordUndoInset();
 826                 else
 827                         cur.recordUndoSelection();
 828                 // if the inset can not be removed from within, delete it
 829                 if (!cur.erase(cmd.getArg(0) == "force")) {
 830                         FuncRequest newcmd = FuncRequest(LFUN_CHAR_DELETE_FORWARD, "force");
 831                         cur.innerText()->dispatch(cur, newcmd);
 832                 }
 833                 break;
 834
 835         case LFUN_ESCAPE:
 836                 if (cur.selection())
 837                         cur.clearSelection();
 838                 else  {
 839                         if (cur.inMacroMode())
 840                                 cur.macroModeClose(true);
 841                         else {
 842                                 cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 843                                 cur.undispatched();
 844                         }
 845                 }
 846                 break;
 847
 848         // 'Locks' the math inset. A 'locked' math inset behaves as a unit
 849         // that is traversed by a single <CursorLeft>/<CursorRight>.
 850         case LFUN_INSET_TOGGLE:
 851                 cur.recordUndo();
 852                 lock(!lock());
 853                 cur.popForward();
 854                 break;
 855
 856         case LFUN_SELF_INSERT:
 857                 // special case first for big delimiters
 858                 if (cmd.argument().size() != 1 && interpretString(cur, cmd.argument()))
 859                         break;
 860
 861                 for (char_type c : cmd.argument()) {
 862                         // Don't record undo steps if we are in macro mode and thus
 863                         // cmd.argument is the next character of the macro name.
 864                         // Otherwise we'll get an invalid cursor if we undo after
 865                         // the macro was finished and the macro is a known command,
 866                         // e.g. sqrt. Cursor::macroModeClose replaces in this case
 867                         // the InsetMathUnknown with name "frac" by an empty
 868                         // InsetMathFrac -> a pos value > 0 is invalid.
 869                         // A side effect is that an undo before the macro is finished
 870                         // undoes the complete macro, not only the last character.
 871                         // At the time we hit '\' we are not in macro mode, still.
 872                         if (!cur.inMacroMode())
 873                                 cur.recordUndoSelection();
 874
 875                         // special handling of space. If we insert an inset
 876                         // via macro mode, we want to put the cursor inside it
 877                         // if relevant. Think typing "\frac<space>".
 878                         if (c == ' '
 879                             && cur.inMacroMode() && cur.macroName() != "\\"
 880                             && cur.macroModeClose() && cur.pos() > 0)
 881                                 cur.editInsertedInset();
 882                         else if (!interpretChar(cur, c)) {
 883                                 cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 884                                 cur.undispatched();
 885                                 // FIXME: can we avoid skipping the end of the string?
 886                                 break;
 887                         }
 888                 }
 889                 break;
 890
 891         //case LFUN_SERVER_GET_XY:
 892         //      break;
 893
 894         case LFUN_SERVER_SET_XY: {
 895                 lyxerr << "LFUN_SERVER_SET_XY broken!" << endl;
 896                 int x = 0;
 897                 int y = 0;
 898                 istringstream is(to_utf8(cmd.argument()));
 899                 is >> x >> y;
 900                 cur.setTargetX(x);
 901                 break;
 902         }
 903
 904         // Special casing for superscript in case of LyX handling
 905         // dead-keys:
 906         case LFUN_ACCENT_CIRCUMFLEX:
 907                 if (cmd.argument().empty()) {
 908                         // do superscript if LyX handles
 909                         // deadkeys
 910                         cur.recordUndoSelection();
 911                         script(cur, true, grabAndEraseSelection(cur));
 912                 }
 913                 break;
 914
 915         case LFUN_ACCENT_UMLAUT:
 916         case LFUN_ACCENT_ACUTE:
 917         case LFUN_ACCENT_GRAVE:
 918         case LFUN_ACCENT_BREVE:
 919         case LFUN_ACCENT_DOT:
 920         case LFUN_ACCENT_MACRON:
 921         case LFUN_ACCENT_CARON:
 922         case LFUN_ACCENT_TILDE:
 923         case LFUN_ACCENT_CEDILLA:
 924         case LFUN_ACCENT_CIRCLE:
 925         case LFUN_ACCENT_UNDERDOT:
 926         case LFUN_ACCENT_TIE:
 927         case LFUN_ACCENT_OGONEK:
 928         case LFUN_ACCENT_HUNGARIAN_UMLAUT:
 929                 break;
 930
 931         //  Math fonts
 932         case LFUN_TEXTSTYLE_APPLY:
 933         case LFUN_TEXTSTYLE_UPDATE:
 934                 handleFont2(cur, cmd.argument());
 935                 break;
 936
 937         case LFUN_FONT_BOLD:
 938                 if (currentMode() != MATH_MODE)
 939                         handleFont(cur, cmd.argument(), "textbf");
 940                 else
 941                         handleFont(cur, cmd.argument(), "mathbf");
 942                 break;
 943         case LFUN_FONT_BOLDSYMBOL:
 944                 if (currentMode() != MATH_MODE)
 945                         handleFont(cur, cmd.argument(), "textbf");
 946                 else
 947                         handleFont(cur, cmd.argument(), "boldsymbol");
 948                 break;
 949         case LFUN_FONT_SANS:
 950                 if (currentMode() != MATH_MODE)
 951                         handleFont(cur, cmd.argument(), "textsf");
 952                 else
 953                         handleFont(cur, cmd.argument(), "mathsf");
 954                 break;
 955         case LFUN_FONT_EMPH:
 956                 if (currentMode() != MATH_MODE)
 957                         handleFont(cur, cmd.argument(), "emph");
 958                 else
 959                         handleFont(cur, cmd.argument(), "mathcal");
 960                 break;
 961         case LFUN_FONT_ROMAN:
 962                 if (currentMode() != MATH_MODE)
 963                         handleFont(cur, cmd.argument(), "textrm");
 964                 else
 965                         handleFont(cur, cmd.argument(), "mathrm");
 966                 break;
 967         case LFUN_FONT_TYPEWRITER:
 968                 if (currentMode() != MATH_MODE)
 969                         handleFont(cur, cmd.argument(), "texttt");
 970                 else
 971                         handleFont(cur, cmd.argument(), "mathtt");
 972                 break;
 973         case LFUN_FONT_FRAK:
 974                 handleFont(cur, cmd.argument(), "mathfrak");
 975                 break;
 976         case LFUN_FONT_ITAL:
 977                 if (currentMode() != MATH_MODE)
 978                         handleFont(cur, cmd.argument(), "textit");
 979                 else
 980                         handleFont(cur, cmd.argument(), "mathit");
 981                 break;
 982         case LFUN_FONT_NOUN:
 983                 if (currentMode() != MATH_MODE)
 984                         // FIXME: should be "noun"
 985                         handleFont(cur, cmd.argument(), "textsc");
 986                 else
 987                         handleFont(cur, cmd.argument(), "mathbb");
 988                 break;
 989         case LFUN_FONT_DEFAULT:
 990                 handleFont(cur, cmd.argument(), "textnormal");
 991                 break;
 992         case LFUN_FONT_UNDERLINE:
 993                 cur.recordUndo();
 994                 cur.handleNest(createInsetMath("underline", cur.buffer()));
 995                 break;
 996
 997         case LFUN_MATH_MODE: {
 998 #if 1
 999                 // ignore math-mode on when already in math mode
1000                 if (currentMode() == Inset::MATH_MODE && cmd.argument() == "on")
1001                         break;
1002                 cur.recordUndoSelection();
1003                 cur.macroModeClose();
1004                 docstring const save_selection = grabAndEraseSelection(cur);
1005                 selClearOrDel(cur);
1006                 if (currentMode() != Inset::MATH_MODE)
1007                         cur.plainInsert(MathAtom(new InsetMathEnsureMath(buffer_)));
1008                 else
1009                         cur.plainInsert(createInsetMath("text", buffer_));
1010                 cur.posBackward();
1011                 cur.pushBackward(*cur.nextInset());
1012                 cur.niceInsert(save_selection);
1013                 cur.forceBufferUpdate();
1014 #else
1015                 if (currentMode() == Inset::TEXT_MODE) {
1016                         cur.recordUndoSelection();
1017                         cur.niceInsert(MathAtom(new InsetMathHull("simple", cur.buffer())));
1018                         cur.message(_("create new math text environment ($...$)"));
1019                 } else {
1020                         handleFont(cur, cmd.argument(), "textrm");
1021                         cur.message(_("entered math text mode (textrm)"));
1022                 }
1023 #endif
1024                 break;
1025         }
1026
1027         case LFUN_REGEXP_MODE: {
1028                 InsetMath * im = cur.inset().asInsetMath();
1029                 if (im) {
1030                         InsetMathHull * i = im->asHullInset();
1031                         if (i && i->getType() == hullRegexp) {
1032                                 cur.message(_("Already in regular expression mode"));
1033                                 break;
1034                         }
1035                 }
1036                 cur.macroModeClose();
1037                 docstring const save_selection = grabAndEraseSelection(cur);
1038                 selClearOrDel(cur);
1039                 cur.plainInsert(MathAtom(new InsetMathHull(buffer_, hullRegexp)));
1040                 cur.posBackward();
1041                 cur.pushBackward(*cur.nextInset());
1042                 cur.niceInsert(save_selection);
1043                 cur.message(_("Regular expression editor mode"));
1044                 break;
1045         }
1046
1047         case LFUN_MATH_FONT_STYLE: {
1048                 FuncRequest fr = FuncRequest(LFUN_MATH_INSERT, '\\' + cmd.argument());
1049                 doDispatch(cur, fr);
1050                 break;
1051         }
1052
1053         case LFUN_MATH_SIZE: {
1054                 FuncRequest fr = FuncRequest(LFUN_MATH_INSERT, cmd.argument());
1055                 doDispatch(cur, fr);
1056                 break;
1057         }
1058
1059         case LFUN_MATH_MATRIX: {
1060                 cur.recordUndo();
1061                 unsigned int m = 1;
1062                 unsigned int n = 1;
1063                 docstring v_align;
1064                 docstring h_align;
1065                 idocstringstream is(cmd.argument());
1066                 is >> m >> n >> v_align >> h_align;
1067                 if (m < 1)
1068                         m = 1;
1069                 if (n < 1)
1070                         n = 1;
1071                 v_align += 'c';
1072                 cur.niceInsert(MathAtom(new InsetMathArray(buffer_,
1073                         from_ascii("array"), m, n, (char)v_align[0], h_align)));
1074                 break;
1075         }
1076
1077         case LFUN_MATH_AMS_MATRIX: {
1078                 cur.recordUndo();
1079                 unsigned int m = 1;
1080                 unsigned int n = 1;
1081                 docstring name = from_ascii("matrix");
1082                 idocstringstream is(cmd.argument());
1083                 is >> m >> n >> name;
1084                 if (m < 1)
1085                         m = 1;
1086                 if (n < 1)
1087                         n = 1;
1088                 // check if we have a valid decoration
1089                 if (name != "pmatrix" && name != "bmatrix"
1090                         && name != "Bmatrix" && name != "vmatrix"
1091                         && name != "Vmatrix" && name != "matrix"
1092                         && name != "smallmatrix")
1093                         name = from_ascii("matrix");
1094
1095                 cur.niceInsert(
1096                         MathAtom(new InsetMathAMSArray(buffer_, name, m, n)));
1097                 break;
1098         }
1099
1100         case LFUN_MATH_DELIM: {
1101                 docstring ls;
1102                 docstring rs = split(cmd.argument(), ls, ' ');
1103                 // Reasonable default values
1104                 if (ls.empty())
1105                         ls = '(';
1106                 if (rs.empty())
1107                         rs = ')';
1108                 cur.recordUndo();
1109                 cur.handleNest(MathAtom(new InsetMathDelim(buffer_, ls, rs)));
1110                 break;
1111         }
1112
1113         case LFUN_MATH_BIGDELIM: {
1114                 docstring const lname  = from_utf8(cmd.getArg(0));
1115                 docstring const ldelim = from_utf8(cmd.getArg(1));
1116                 docstring const rname  = from_utf8(cmd.getArg(2));
1117                 docstring const rdelim = from_utf8(cmd.getArg(3));
1118                 latexkeys const * l = in_word_set(lname);
1119                 bool const have_l = l && l->inset == "big" &&
1120                                     InsetMathBig::isBigInsetDelim(ldelim);
1121                 l = in_word_set(rname);
1122                 bool const have_r = l && l->inset == "big" &&
1123                                     InsetMathBig::isBigInsetDelim(rdelim);
1124                 // We mimic LFUN_MATH_DELIM in case we have an empty left
1125                 // or right delimiter.
1126                 if (have_l || have_r) {
1127                         cur.recordUndo();
1128                         docstring const selection = grabAndEraseSelection(cur);
1129                         selClearOrDel(cur);
1130                         if (have_l)
1131                                 cur.insert(MathAtom(new InsetMathBig(lname,
1132                                                                 ldelim)));
1133                         // first insert the right delimiter and then go back
1134                         // and re-insert the selection (bug 7088)
1135                         if (have_r) {
1136                                 cur.insert(MathAtom(new InsetMathBig(rname,
1137                                                                 rdelim)));
1138                                 cur.posBackward();
1139                         }
1140                         cur.niceInsert(selection);
1141                 }
1142                 // Don't call cur.undispatched() if we did nothing, this would
1143                 // lead to infinite recursion via Text::dispatch().
1144                 break;
1145         }
1146
1147         case LFUN_SPACE_INSERT: {
1148                 cur.recordUndoSelection();
1149                 string const name = cmd.getArg(0);
1150                 if (name == "normal")
1151                         cur.insert(MathAtom(new InsetMathSpace(" ", "")));
1152                 else if (name == "protected")
1153                         cur.insert(MathAtom(new InsetMathSpace("~", "")));
1154                 else if (name == "thin" || name == "med" || name == "thick")
1155                         cur.insert(MathAtom(new InsetMathSpace(name + "space", "")));
1156                 else if (name == "hfill*")
1157                         cur.insert(MathAtom(new InsetMathSpace("hspace*{\\fill}", "")));
1158                 else if (name == "quad" || name == "qquad" ||
1159                          name == "enspace" || name == "enskip" ||
1160                          name == "negthinspace" || name == "negmedspace" ||
1161                          name == "negthickspace" || name == "hfill")
1162                         cur.insert(MathAtom(new InsetMathSpace(name, "")));
1163                 else if (name == "hspace" || name == "hspace*") {
1164                         string const len = cmd.getArg(1);
1165                         if (len.empty() || !isValidLength(len)) {
1166                                 lyxerr << "LyX function 'space-insert " << name << "' "
1167                                           "needs a valid length argument." << endl;
1168                                 break;
1169                         }
1170                         cur.insert(MathAtom(new InsetMathSpace(name, len)));
1171                 } else
1172                         cur.insert(MathAtom(new InsetMathSpace));
1173                 break;
1174         }
1175
1176         case LFUN_MATH_SPACE:
1177                 cur.recordUndoSelection();
1178                 if (cmd.argument().empty())
1179                         cur.insert(MathAtom(new InsetMathSpace));
1180                 else {
1181                         string const name = cmd.getArg(0);
1182                         string const len = cmd.getArg(1);
1183                         cur.insert(MathAtom(new InsetMathSpace(name, len)));
1184                 }
1185                 break;
1186
1187         case LFUN_ERT_INSERT:
1188                 // interpret this as if a backslash was typed
1189                 cur.recordUndo();
1190                 interpretChar(cur, '\\');
1191                 break;
1192
1193         case LFUN_MATH_SUBSCRIPT:
1194                 // interpret this as if a _ was typed
1195                 cur.recordUndoSelection();
1196                 interpretChar(cur, '_');
1197                 break;
1198
1199         case LFUN_MATH_SUPERSCRIPT:
1200                 // interpret this as if a ^ was typed
1201                 cur.recordUndoSelection();
1202                 interpretChar(cur, '^');
1203                 break;
1204
1205         case LFUN_MATH_MACRO_FOLD:
1206         case LFUN_MATH_MACRO_UNFOLD: {
1207                 Cursor it = cur;
1208                 bool fold = act == LFUN_MATH_MACRO_FOLD;
1209                 bool found = findMacroToFoldUnfold(it, fold);
1210                 if (found) {
1211                         InsetMathMacro * macro = it.nextInset()->asInsetMath()->asMacro();
1212                         cur.recordUndoInset();
1213                         if (fold)
1214                                 macro->fold(cur);
1215                         else
1216                                 macro->unfold(cur);
1217                 }
1218                 break;
1219         }
1220
1221         case LFUN_QUOTE_INSERT:
1222                 // interpret this as if a straight " was typed
1223                 cur.recordUndoSelection();
1224                 interpretChar(cur, '\"');
1225                 break;
1226
1227 // FIXME: We probably should swap parts of "math-insert" and "self-insert"
1228 // handling such that "self-insert" works on "arbitrary stuff" too, and
1229 // math-insert only handles special math things like "matrix".
1230         case LFUN_MATH_INSERT: {
1231                 cur.recordUndoSelection();
1232                 if (cmd.argument() == "^" || cmd.argument() == "_")
1233                         interpretChar(cur, cmd.argument()[0]);
1234                 else if (!cur.selection())
1235                         cur.niceInsert(cmd.argument());
1236                 else {
1237                         MathData ar(cur.buffer());
1238                         asArray(cmd.argument(), ar);
1239                         if (ar.size() == 1
1240                             && ar[0]->asNestInset()
1241                             && ar[0]->asNestInset()->nargs() > 1)
1242                                 handleNest(cur, ar[0]);
1243                         else
1244                                 cur.niceInsert(cmd.argument());
1245                 }
1246                 break;
1247         }
1248
1249         case LFUN_DIALOG_SHOW_NEW_INSET: {
1250                 docstring const & name = cmd.argument();
1251                 string data;
1252                 if (name == "ref") {
1253                         InsetMathRef tmp(buffer_, name);
1254                         data = tmp.createDialogStr();
1255                         cur.bv().showDialog(to_utf8(name), data);
1256                 } else if (name == "mathspace") {
1257                         cur.bv().showDialog(to_utf8(name));
1258                 }
1259                 break;
1260         }
1261
1262         case LFUN_INSET_INSERT: {
1263                 MathData ar;
1264                 if (createInsetMath_fromDialogStr(cmd.argument(), ar)) {
1265                         cur.recordUndoSelection();
1266                         cur.insert(ar);
1267                         cur.forceBufferUpdate();
1268                 } else
1269                         cur.undispatched();
1270                 break;
1271         }
1272         case LFUN_INSET_DISSOLVE:
1273                 if (!asHullInset()) {
1274                         cur.recordUndoInset();
1275                         cur.pullArg();
1276                 }
1277                 break;
1278
1279         case LFUN_MATH_LIMITS: {
1280                 InsetMath * in = 0;
1281                 if (cur.pos() < cur.lastpos() && cur.nextMath().allowsLimitsChange())
1282                         in = &cur.nextMath();
1283                 else if (cur.pos() > 0 && cur.prevMath().allowsLimitsChange())
1284                         in = &cur.prevMath();
1285                 else if (cur.lastpos() > 0 && cur.cell().back()->allowsLimitsChange())
1286                         in = cur.cell().back().nucleus();
1287                 // only when nucleus allows this
1288                 if (!in)
1289                         return;
1290                 cur.recordUndoInset();
1291                 if (!cmd.argument().empty()) {
1292                         if (cmd.argument() == "limits")
1293                                 in->limits(LIMITS);
1294                         else if (cmd.argument() == "nolimits")
1295                                 in->limits(NO_LIMITS);
1296                         else
1297                                 in->limits(AUTO_LIMITS);
1298                 } else if (in->limits() == AUTO_LIMITS)
1299                         in->limits(in->defaultLimits() == LIMITS ? NO_LIMITS : LIMITS);
1300                 else
1301                         in->limits(AUTO_LIMITS);
1302                 return;
1303         }
1304
1305         default:
1306                 InsetMath::doDispatch(cur, cmd);
1307                 break;
1308         }
1309 }
1310
1311
1312 bool InsetMathNest::findMacroToFoldUnfold(Cursor & it, bool fold) const {
1313         // look for macro to open/close, but stay in mathed
1314         for (; !it.empty(); it.pop_back()) {
1315
1316                 // go backward through the current cell
1317                 Inset * inset = it.nextInset();
1318                 while (inset && inset->asInsetMath()) {
1319                         InsetMathMacro * macro = inset->asInsetMath()->asMacro();
1320                         if (macro) {
1321                                 // found the an macro to open/close?
1322                                 if (macro->folded() != fold)
1323                                         return true;
1324
1325                                 // Wrong folding state.
1326                                 // If this was the first we see in this slice, look further left,
1327                                 // otherwise go up.
1328                                 if (inset != it.nextInset())
1329                                         break;
1330                         }
1331
1332                         // go up if this was the left most position
1333                         if (it.pos() == 0)
1334                                 break;
1335
1336                         // go left
1337                         it.pos()--;
1338                         inset = it.nextInset();
1339                 }
1340         }
1341
1342         return false;
1343 }
1344
1345
1346 bool InsetMathNest::getStatus(Cursor & cur, FuncRequest const & cmd,
1347                 FuncStatus & flag) const
1348 {
1349         // the font related toggles
1350         //string tc = "mathnormal";
1351         bool ret = true;
1352         string const arg = to_utf8(cmd.argument());
1353         switch (cmd.action()) {
1354 #if 0
1355         case LFUN_INSET_MODIFY:
1356                 // FIXME: check temporarily disabled
1357                 // valign code
1358                 char align = mathcursor::valign();
1359                 if (align == '\0') {
1360                         enable = false;
1361                         break;
1362                 }
1363                 if (cmd.argument().empty()) {
1364                         flag.clear();
1365                         break;
1366                 }
1367                 if (!contains("tcb", cmd.argument()[0])) {
1368                         enable = false;
1369                         break;
1370                 }
1371                 flag.setOnOff(cmd.argument()[0] == align);
1372                 break;
1373 #endif
1374         /// We have to handle them since 1.4 blocks all unhandled actions
1375         case LFUN_FONT_ITAL:
1376         case LFUN_FONT_BOLD:
1377         case LFUN_FONT_BOLDSYMBOL:
1378         case LFUN_FONT_SANS:
1379         case LFUN_FONT_EMPH:
1380         case LFUN_FONT_TYPEWRITER:
1381         case LFUN_FONT_NOUN:
1382         case LFUN_FONT_ROMAN:
1383         case LFUN_FONT_DEFAULT:
1384                 flag.setEnabled(true);
1385                 break;
1386
1387         // we just need to be in math mode to enable that
1388         case LFUN_MATH_SIZE:
1389         case LFUN_MATH_SPACE:
1390         case LFUN_MATH_EXTERN:
1391                 flag.setEnabled(true);
1392                 break;
1393
1394         case LFUN_FONT_UNDERLINE:
1395         case LFUN_FONT_FRAK:
1396                 flag.setEnabled(currentMode() != TEXT_MODE);
1397                 break;
1398
1399         case LFUN_MATH_FONT_STYLE: {
1400                 bool const textarg =
1401                         arg == "textbf"   || arg == "textsf" ||
1402                         arg == "textrm"   || arg == "textmd" ||
1403                         arg == "textit"   || arg == "textsc" ||
1404                         arg == "textsl"   || arg == "textup" ||
1405                         arg == "texttt"   || arg == "textbb" ||
1406                         arg == "textnormal";
1407                 flag.setEnabled(currentMode() != TEXT_MODE || textarg);
1408                 break;
1409         }
1410
1411         case LFUN_MATH_MODE:
1412                 // forbid "math-mode on" in math mode to prevent irritating
1413                 // behaviour of menu entries (bug 6709)
1414                 flag.setEnabled(currentMode() == TEXT_MODE || arg != "on");
1415                 break;
1416
1417         case LFUN_MATH_INSERT:
1418                 flag.setEnabled(currentMode() != TEXT_MODE);
1419                 break;
1420
1421         case LFUN_MATH_AMS_MATRIX:
1422         case LFUN_MATH_MATRIX:
1423                 flag.setEnabled(currentMode() == MATH_MODE);
1424                 break;
1425
1426         case LFUN_INSET_INSERT: {
1427                 // Don't test createMathInset_fromDialogStr(), since
1428                 // getStatus is not called with a valid reference and the
1429                 // dialog would not be applicable.
1430                 string const name = cmd.getArg(0);
1431                 flag.setEnabled(name == "ref" || name == "mathspace");
1432                 break;
1433         }
1434
1435         case LFUN_DIALOG_SHOW_NEW_INSET: {
1436                 docstring const & name = cmd.argument();
1437                 if (name == "space")
1438                         flag.setEnabled(false);
1439                 break;
1440         }
1441
1442
1443         case LFUN_MATH_DELIM:
1444         case LFUN_MATH_BIGDELIM:
1445                 // Don't do this with multi-cell selections
1446                 flag.setEnabled(cur.selBegin().idx() == cur.selEnd().idx());
1447                 break;
1448
1449         case LFUN_MATH_MACRO_FOLD:
1450         case LFUN_MATH_MACRO_UNFOLD: {
1451                 Cursor it = cur;
1452                 bool found = findMacroToFoldUnfold(it, cmd.action() == LFUN_MATH_MACRO_FOLD);
1453                 flag.setEnabled(found);
1454                 break;
1455         }
1456
1457         case LFUN_SPECIALCHAR_INSERT:
1458         case LFUN_SCRIPT_INSERT:
1459                 // FIXME: These would probably make sense in math-text mode
1460                 flag.setEnabled(false);
1461                 break;
1462
1463         case LFUN_CAPTION_INSERT:
1464                 flag.setEnabled(false);
1465                 break;
1466
1467         case LFUN_SPACE_INSERT: {
1468                 docstring const & name = cmd.argument();
1469                 if (name == "visible")
1470                         flag.setEnabled(false);
1471                 break;
1472         }
1473
1474         case LFUN_INSET_DISSOLVE:
1475                 flag.setEnabled(!asHullInset());
1476                 break;
1477
1478         case LFUN_PASTE: {
1479                 docstring const & name = cmd.argument();
1480                 if (name == "html" || name == "latex")
1481                         flag.setEnabled(false);
1482                 break;
1483         }
1484
1485         case LFUN_MATH_LIMITS: {
1486                 InsetMath * in = 0;
1487                 if (cur.pos() < cur.lastpos() && cur.nextMath().allowsLimitsChange())
1488                         in = &cur.nextMath();
1489                 else if (cur.pos() > 0 && cur.prevMath().allowsLimitsChange())
1490                         in = &cur.prevMath();
1491                 else if (cur.lastpos() > 0 && cur.cell().back()->allowsLimitsChange())
1492                         in = cur.cell().back().nucleus();
1493                 if (in) {
1494                         if (!cmd.argument().empty()) {
1495                                 if (cmd.argument() == "limits")
1496                                         flag.setOnOff(in->limits() == LIMITS);
1497                                 else if (cmd.argument() == "nolimits")
1498                                         flag.setOnOff(in->limits() == NO_LIMITS);
1499                                 else
1500                                         flag.setOnOff(in->limits() == AUTO_LIMITS);
1501                         }
1502                         flag.setEnabled(true);
1503                 } else
1504                         flag.setEnabled(false);
1505                 return true;
1506         }
1507
1508         default:
1509                 ret = false;
1510                 break;
1511         }
1512         return ret;
1513 }
1514
1515
1516 void InsetMathNest::edit(Cursor & cur, bool front, EntryDirection entry_from)
1517 {
1518         cur.push(*this);
1519         bool enter_front = (entry_from == Inset::ENTRY_DIRECTION_LEFT ||
1520                 (entry_from == Inset::ENTRY_DIRECTION_IGNORE && front));
1521         enter_front ? idxFirst(cur) : idxLast(cur);
1522         cur.resetAnchor();
1523         //lyxerr << "InsetMathNest::edit, cur:\n" << cur << endl;
1524 }
1525
1526
1527 Inset * InsetMathNest::editXY(Cursor & cur, int x, int y)
1528 {
1529         int idx_min = -1;
1530         int dist_min = 1000000;
1531         for (idx_type i = 0, n = nargs(); i != n; ++i) {
1532                 int const d = cell(i).dist(cur.bv(), x, y);
1533                 if (d < dist_min) {
1534                         dist_min = d;
1535                         idx_min = i;
1536                 }
1537         }
1538         if (idx_min == -1)
1539                 return this;
1540
1541         MathData & ar = cell(idx_min);
1542         cur.push(*this);
1543         cur.idx() = idx_min;
1544         cur.pos() = ar.x2pos(&cur.bv(), x - ar.xo(cur.bv()));
1545
1546         //lyxerr << "found cell : " << idx_min << " pos: " << cur.pos() << endl;
1547         if (dist_min == 0) {
1548                 // hit inside cell
1549                 for (pos_type i = 0, n = ar.size(); i < n; ++i)
1550                         if (ar[i]->covers(cur.bv(), x, y))
1551                                 return ar[i].nucleus()->editXY(cur, x, y);
1552         }
1553         return this;
1554 }
1555
1556
1557 void InsetMathNest::lfunMousePress(Cursor & cur, FuncRequest & cmd)
1558 {
1559         //lyxerr << "## lfunMousePress: buttons: " << cmd.button() << endl;
1560         BufferView & bv = cur.bv();
1561         if (cmd.button() == mouse_button::button3) {
1562                 // Don't do anything if we right-click a
1563                 // selection, a context menu will popup.
1564                 if (bv.cursor().selection() && cur >= bv.cursor().selectionBegin()
1565                       && cur < bv.cursor().selectionEnd()) {
1566                         cur.noScreenUpdate();
1567                         return;
1568                 }
1569         }
1570
1571         // set cursor after the inset if x is nearer to that position (bug 9748)
1572         cur.moveToClosestEdge(cmd.x(), true);
1573
1574         bool do_selection = cmd.button() == mouse_button::button1
1575                 && cmd.modifier() == ShiftModifier;
1576         bv.mouseSetCursor(cur, do_selection);
1577         if (cmd.button() == mouse_button::button1) {
1578                 //lyxerr << "## lfunMousePress: setting cursor to: " << cur << endl;
1579                 // Update the cursor update flags as needed:
1580                 //
1581                 // Update::Decoration: tells to update the decoration
1582                 //                     (visual box corners that define
1583                 //                     the inset)/
1584                 // Update::FitCursor: adjust the screen to the cursor
1585                 //                    position if needed
1586                 // cur.result().update(): don't overwrite previously set flags.
1587                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor
1588                                 | cur.result().screenUpdate());
1589         } else if (cmd.button() == mouse_button::button2 && lyxrc.mouse_middlebutton_paste) {
1590                 if (cap::selection()) {
1591                         // See comment in Text::dispatch why we do this
1592                         cap::copySelectionToStack();
1593                         cmd = FuncRequest(LFUN_PASTE, "0");
1594                         doDispatch(bv.cursor(), cmd);
1595                 } else {
1596                         MathData ar;
1597                         asArray(theSelection().get(), ar);
1598                         bv.cursor().insert(ar);
1599                 }
1600         }
1601 }
1602
1603
1604 void InsetMathNest::lfunMouseMotion(Cursor & cur, FuncRequest & cmd)
1605 {
1606         // only select with button 1
1607         if (cmd.button() != mouse_button::button1)
1608                 return;
1609
1610         Cursor & bvcur = cur.bv().cursor();
1611
1612         // ignore motions deeper nested than the real anchor
1613         if (!bvcur.realAnchor().hasPart(cur)) {
1614                 cur.undispatched();
1615                 return;
1616         }
1617
1618         // set cursor after the inset if x is nearer to that position (bug 9748)
1619         cur.moveToClosestEdge(cmd.x());
1620
1621         CursorSlice old = bvcur.top();
1622
1623         // We continue with our existing selection or start a new one, so don't
1624         // reset the anchor.
1625         bvcur.setCursor(cur);
1626         // Did we actually move?
1627         if (cur.top() == old)
1628                 // We didn't move one iota, so no need to change selection status
1629                 // or update the screen.
1630                 cur.screenUpdateFlags(Update::SinglePar | Update::FitCursor);
1631         else
1632                 bvcur.setSelection();
1633 }
1634
1635
1636 void InsetMathNest::lfunMouseRelease(Cursor & cur, FuncRequest & cmd)
1637 {
1638         //lyxerr << "## lfunMouseRelease: buttons: " << cmd.button() << endl;
1639
1640         if (cmd.button() == mouse_button::button1) {
1641                 if (!cur.selection())
1642                         cur.noScreenUpdate();
1643                 else {
1644                         Cursor & bvcur = cur.bv().cursor();
1645                         bvcur.selection(true);
1646                 }
1647                 return;
1648         }
1649
1650         cur.undispatched();
1651 }
1652
1653
1654 bool InsetMathNest::interpretChar(Cursor & cur, char_type const c)
1655 {
1656         // try auto-correction
1657         if (lyxrc.autocorrection_math && cur.pos() != 0
1658                   && math_autocorrect(cur, c))
1659                 return true;
1660
1661         //lyxerr << "interpret 2: '" << c << "'" << endl;
1662         docstring save_selection;
1663         if (c == '^' || c == '_')
1664                 save_selection = grabAndEraseSelection(cur);
1665
1666         cur.clearTargetX();
1667         Buffer * buf = cur.buffer();
1668
1669         // handle macroMode
1670         if (cur.inMacroMode()) {
1671                 docstring name = cur.macroName();
1672
1673                 /// are we currently typing '#1' or '#2' or...?
1674                 if (name == "\\#") {
1675                         cur.backspace();
1676                         int n = c - '0';
1677                         if (n >= 1 && n <= 9)
1678                                 cur.insert(new InsetMathMacroArgument(n));
1679                         return true;
1680                 }
1681
1682                 // do not finish macro for known * commands
1683                 bool star_macro = c == '*'
1684                         && (in_word_set(name.substr(1) + '*')
1685                             || cur.buffer()->getMacro(name.substr(1) + "*", cur, true));
1686                 if (isAlphaASCII(c) || star_macro) {
1687                         cur.activeMacro()->setName(name + docstring(1, c));
1688                         return true;
1689                 }
1690
1691                 // handle 'special char' macros
1692                 if (name == "\\") {
1693                         // remove the '\\'
1694                         if (c == '\\') {
1695                                 cur.backspace();
1696                                 if (currentMode() != InsetMath::MATH_MODE)
1697                                         cur.niceInsert(createInsetMath("textbackslash", buf));
1698                                 else
1699                                         cur.niceInsert(createInsetMath("backslash", buf));
1700                         } else if (c == '^' && currentMode() == InsetMath::MATH_MODE) {
1701                                 cur.backspace();
1702                                 cur.niceInsert(createInsetMath("mathcircumflex", buf));
1703                         } else if (c == '{' || c == '%') {
1704                                 //using the saved selection as argument
1705                                 InsetMathUnknown * p = cur.activeMacro();
1706                                 p->finalize();
1707                                 MathData sel(cur.buffer());
1708                                 asArray(p->selection(), sel);
1709                                 cur.backspace();
1710                                 if (c == '{')
1711                                         cur.niceInsert(MathAtom(new InsetMathBrace(sel)));
1712                                 else
1713                                         cur.niceInsert(MathAtom(new InsetMathComment(sel)));
1714                         } else if (c == '#') {
1715                                 LASSERT(cur.activeMacro(), return false);
1716                                 cur.activeMacro()->setName(name + docstring(1, c));
1717                         } else {
1718                                 cur.backspace();
1719                                 cur.niceInsert(createInsetMath(docstring(1, c), buf));
1720                         }
1721                         return true;
1722                 }
1723
1724                 // One character big delimiters. The others are handled in
1725                 // interpretString().
1726                 latexkeys const * l = in_word_set(name.substr(1));
1727                 if (name[0] == '\\' && l && l->inset == "big") {
1728                         docstring delim;
1729                         switch (c) {
1730                         case '{':
1731                                 delim = from_ascii("\\{");
1732                                 break;
1733                         case '}':
1734                                 delim = from_ascii("\\}");
1735                                 break;
1736                         default:
1737                                 delim = docstring(1, c);
1738                                 break;
1739                         }
1740                         if (InsetMathBig::isBigInsetDelim(delim)) {
1741                                 // name + delim ared a valid InsetMathBig.
1742                                 // We can't use cur.macroModeClose() because
1743                                 // it does not handle delim.
1744                                 InsetMathUnknown * p = cur.activeMacro();
1745                                 p->finalize();
1746                                 --cur.pos();
1747                                 cur.cell().erase(cur.pos());
1748                                 cur.plainInsert(MathAtom(
1749                                         new InsetMathBig(name.substr(1), delim)));
1750                                 return true;
1751                         }
1752                 } else if (name == "\\smash" && c == '[') {
1753                         // We can't use cur.macroModeClose() because
1754                         // it would create an InsetMathPhantom
1755                         InsetMathUnknown * p = cur.activeMacro();
1756                         p->finalize();
1757                         interpretChar(cur, c);
1758                         return true;
1759                 }
1760
1761                 // leave macro mode and try again if necessary
1762                 if (cur.macroModeClose()) {
1763                         MathAtom const atom = cur.prevAtom();
1764                         if (atom->asNestInset() && atom->isActive()) {
1765                                 cur.posBackward();
1766                                 cur.nextInset()->edit(cur, true);
1767                         }
1768                 }
1769                 if (c == '{')
1770                         cur.niceInsert(MathAtom(new InsetMathBrace(buf)));
1771                 else if (c != ' ')
1772                         interpretChar(cur, c);
1773                 return true;
1774         }
1775
1776
1777         // just clear selection on pressing the space bar
1778         if (cur.selection() && c == ' ') {
1779                 cur.selection(false);
1780                 return true;
1781         }
1782
1783         if (c == '\\') {
1784                 //lyxerr << "starting with macro" << endl;
1785                 bool reduced = cap::reduceSelectionToOneCell(cur);
1786                 if (reduced || !cur.selection()) {
1787                         cur.recordUndoInset();
1788                         docstring const safe = cap::grabAndEraseSelection(cur);
1789                         if (!cur.inRegexped())
1790                                 cur.insert(MathAtom(new InsetMathUnknown(from_ascii("\\"), safe, false)));
1791                         else
1792                                 cur.niceInsert(createInsetMath("backslash", buf));
1793                 }
1794                 return true;
1795         }
1796
1797         selClearOrDel(cur);
1798
1799         if (c == '\n') {
1800                 if (currentMode() != InsetMath::MATH_MODE)
1801                         cur.insert(c);
1802                 return true;
1803         }
1804
1805         if (c == ' ') {
1806                 if (currentMode() != InsetMath::MATH_MODE) {
1807                         // insert spaces in text or undecided mode,
1808                         // but suppress direct insertion of two spaces in a row
1809                         // the still allows typing  '<space>a<space>' and deleting the 'a', but
1810                         // it is better than nothing...
1811                         if (cur.pos() == 0 || cur.prevAtom()->getChar() != ' ') {
1812                                 cur.insert(c);
1813                                 // FIXME: we have to enable full redraw here because of the
1814                                 // visual box corners that define the inset. If we know for
1815                                 // sure that we stay within the same cell we can optimize for
1816                                 // that using:
1817                                 //cur.screenUpdateFlags(Update::SinglePar | Update::FitCursor);
1818                         }
1819                         return true;
1820                 }
1821                 if (cur.pos() != 0 && cur.prevAtom()->asSpaceInset()) {
1822                         cur.prevAtom().nucleus()->asSpaceInset()->incSpace();
1823                         // FIXME: we have to enable full redraw here because of the
1824                         // visual box corners that define the inset. If we know for
1825                         // sure that we stay within the same cell we can optimize for
1826                         // that using:
1827                         //cur.screenUpdateFlags(Update::SinglePar | Update::FitCursor);
1828                         return true;
1829                 }
1830
1831                 if (cur.popForward()) {
1832                         // FIXME: we have to enable full redraw here because of the
1833                         // visual box corners that define the inset. If we know for
1834                         // sure that we stay within the same cell we can optimize for
1835                         // that using:
1836                         //cur.screenUpdateFlags(Update::FitCursor);
1837                         return true;
1838                 }
1839
1840                 // if we are at the very end, leave the formula
1841                 return cur.pos() != cur.lastpos();
1842         }
1843
1844         // These should be treated differently when not in text mode:
1845         if (cur.inRegexped()) {
1846                 switch (c) {
1847                 case '^':
1848                         cur.niceInsert(createInsetMath("mathcircumflex", buf));
1849                         break;
1850                 case '{':
1851                 case '}':
1852                 case '#':
1853                 case '%':
1854                 case '_':
1855                         cur.niceInsert(createInsetMath(docstring(1, c), buf));
1856                         break;
1857                 case '~':
1858                         cur.niceInsert(createInsetMath("sim", buf));
1859                         break;
1860                 default:
1861                         cur.insert(c);
1862                 }
1863                 return true;
1864         } else if (currentMode() != InsetMath::TEXT_MODE) {
1865                 if (c == '_') {
1866                         script(cur, false, save_selection);
1867                         return true;
1868                 }
1869                 if (c == '^') {
1870                         script(cur, true, save_selection);
1871                         return true;
1872                 }
1873                 if (c == '~') {
1874                         cur.niceInsert(createInsetMath("sim", buf));
1875                         return true;
1876                 }
1877                 if (currentMode() == InsetMath::MATH_MODE && Encodings::isUnicodeTextOnly(c)) {
1878                         MathAtom at = createInsetMath("text", buf);
1879                         at.nucleus()->cell(0).push_back(MathAtom(new InsetMathChar(c)));
1880                         cur.insert(at);
1881                         cur.posForward();
1882                         return true;
1883                 }
1884         } else {
1885                 if (c == '^') {
1886                         cur.niceInsert(createInsetMath("textasciicircum", buf));
1887                         return true;
1888                 }
1889                 if (c == '~') {
1890                         cur.niceInsert(createInsetMath("textasciitilde", buf));
1891                         return true;
1892                 }
1893         }
1894
1895         if (c == '{' || c == '}' || c == '&' || c == '$' || c == '#' ||
1896             c == '%' || c == '_') {
1897                 cur.niceInsert(createInsetMath(docstring(1, c), buf));
1898                 return true;
1899         }
1900
1901         // no special circumstances, so insert the character without any fuss
1902         cur.insert(c);
1903         return true;
1904 }
1905
1906
1907 bool InsetMathNest::interpretString(Cursor & cur, docstring const & str)
1908 {
1909         if (str == "\\limits" || str == "\\nolimits") {
1910                 if (cur.pos() > 0 && cur.prevMath().allowsLimitsChange()) {
1911                         cur.prevMath().limits(str == "\\limits" ? LIMITS : NO_LIMITS);
1912                         return true;
1913                 } else {
1914                         cur.message(bformat(_("Cannot apply %1$s here."), str));
1915                         return false;
1916                 }
1917         }
1918         // Create a InsetMathBig from cur.cell()[cur.pos() - 1] and t if
1919         // possible
1920         if (!cur.empty() && cur.pos() > 0 &&
1921             cur.cell()[cur.pos() - 1]->asUnknownInset()) {
1922                 if (InsetMathBig::isBigInsetDelim(str)) {
1923                         docstring prev = asString(cur.cell()[cur.pos() - 1]);
1924                         if (prev[0] == '\\') {
1925                                 prev = prev.substr(1);
1926                                 latexkeys const * l = in_word_set(prev);
1927                                 if (l && l->inset == "big") {
1928                                         cur.recordUndoSelection();
1929                                         cur.cell()[cur.pos() - 1] =
1930                                                 MathAtom(new InsetMathBig(prev, str));
1931                                         return true;
1932                                 }
1933                         }
1934                 }
1935         }
1936         return false;
1937 }
1938
1939
1940 bool InsetMathNest::script(Cursor & cur, bool up)
1941 {
1942         return script(cur, up, docstring());
1943 }
1944
1945
1946 bool InsetMathNest::script(Cursor & cur, bool up,
1947                 docstring const & save_selection)
1948 {
1949         // Hack to get \^ and \_ working
1950         //lyxerr << "handling script: up: " << up << endl;
1951         if (cur.inMacroMode() && cur.macroName() == "\\") {
1952                 if (up)
1953                         cur.niceInsert(createInsetMath("mathcircumflex", cur.buffer()));
1954                 else
1955                         interpretChar(cur, '_');
1956                 return true;
1957         }
1958
1959         cur.macroModeClose();
1960         if (asScriptInset() && cur.idx() == 0) {
1961                 // we are in a nucleus of a script inset, move to _our_ script
1962                 InsetMathScript * inset = asScriptInset();
1963                 //lyxerr << " going to cell " << inset->idxOfScript(up) << endl;
1964                 inset->ensure(up);
1965                 cur.idx() = inset->idxOfScript(up);
1966                 cur.pos() = 0;
1967         } else if (cur.pos() != 0 && cur.prevAtom()->asScriptInset()) {
1968                 --cur.pos();
1969                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1970                 cur.push(*inset);
1971                 inset->ensure(up);
1972                 cur.idx() = inset->idxOfScript(up);
1973                 cur.pos() = cur.lastpos();
1974         } else {
1975                 // convert the thing to our left to a scriptinset or create a new
1976                 // one if in the very first position of the array
1977                 if (cur.pos() == 0) {
1978                         //lyxerr << "new scriptinset" << endl;
1979                         cur.insert(new InsetMathScript(buffer_, up));
1980                 } else {
1981                         //lyxerr << "converting prev atom " << endl;
1982                         cur.prevAtom() = MathAtom(new InsetMathScript(buffer_, cur.prevAtom(), up));
1983                 }
1984                 --cur.pos();
1985                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1986                 // See comment in MathParser.cpp for special handling of {}-bases
1987
1988                 cur.push(*inset);
1989                 cur.idx() = 1;
1990                 cur.pos() = 0;
1991         }
1992         //lyxerr << "inserting selection 1:\n" << save_selection << endl;
1993         cur.niceInsert(save_selection);
1994         cur.resetAnchor();
1995         //lyxerr << "inserting selection 2:\n" << save_selection << endl;
1996         return true;
1997 }
1998
1999
2000 bool InsetMathNest::completionSupported(Cursor const & cur) const
2001 {
2002         return cur.inMacroMode();
2003 }
2004
2005
2006 bool InsetMathNest::inlineCompletionSupported(Cursor const & cur) const
2007 {
2008         return cur.inMacroMode();
2009 }
2010
2011
2012 bool InsetMathNest::automaticInlineCompletion() const
2013 {
2014         return lyxrc.completion_inline_math;
2015 }
2016
2017
2018 bool InsetMathNest::automaticPopupCompletion() const
2019 {
2020         return lyxrc.completion_popup_math;
2021 }
2022
2023
2024 CompletionList const *
2025 InsetMathNest::createCompletionList(Cursor const & cur) const
2026 {
2027         if (!cur.inMacroMode())
2028                 return 0;
2029
2030         return new MathCompletionList(cur);
2031 }
2032
2033
2034 docstring InsetMathNest::completionPrefix(Cursor const & cur) const
2035 {
2036         if (!cur.inMacroMode())
2037                 return docstring();
2038
2039         return cur.activeMacro()->name();
2040 }
2041
2042
2043 bool InsetMathNest::insertCompletion(Cursor & cur, docstring const & s,
2044                                      bool finished)
2045 {
2046         if (!cur.inMacroMode())
2047                 return false;
2048
2049         // append completion to active macro
2050         InsetMathUnknown * inset = cur.activeMacro();
2051         inset->setName(inset->name() + s);
2052
2053         // finish macro
2054         if (finished) {
2055 #if 0
2056                 // FIXME: this creates duplicates in the completion popup
2057                 // which looks ugly. Moreover the changes the list lengths
2058                 // which seems to confuse the popup as well.
2059                 MathCompletionList::addToFavorites(inset->name());
2060 #endif
2061                 lyx::dispatch(FuncRequest(LFUN_SELF_INSERT, " "));
2062         }
2063
2064         return true;
2065 }
2066
2067
2068 void InsetMathNest::completionPosAndDim(Cursor const & cur, int & x, int & y,
2069                                         Dimension & dim) const
2070 {
2071         Inset const * inset = cur.activeMacro();
2072         if (!inset)
2073                 return;
2074
2075         // get inset dimensions
2076         dim = cur.bv().coordCache().insets().dim(inset);
2077         // FIXME: these 3 are no accurate, but should depend on the font.
2078         // Now the popup jumps down if you enter a char with descent > 0.
2079         dim.des += 3;
2080         dim.asc += 3;
2081
2082         // and position
2083         Point xy = cur.bv().coordCache().insets().xy(inset);
2084         x = xy.x_;
2085         y = xy.y_;
2086 }
2087
2088
2089 ////////////////////////////////////////////////////////////////////
2090
2091 MathCompletionList::MathCompletionList(Cursor const & cur)
2092 {
2093         // fill it with macros from the buffer
2094         MacroNameSet macros;
2095         cur.buffer()->listMacroNames(macros);
2096         MacroNameSet::const_iterator it;
2097         for (it = macros.begin(); it != macros.end(); ++it) {
2098                 if (cur.buffer()->getMacro(*it, cur, false))
2099                         locals.push_back("\\" + *it);
2100         }
2101         sort(locals.begin(), locals.end());
2102
2103         if (!globals.empty())
2104                 return;
2105
2106         // fill in global macros
2107         macros.clear();
2108         MacroTable::globalMacros().getMacroNames(macros, false);
2109         //lyxerr << "Globals completion macros: ";
2110         for (it = macros.begin(); it != macros.end(); ++it) {
2111                 //lyxerr << "\\" + *it << " ";
2112                 globals.push_back("\\" + *it);
2113         }
2114         //lyxerr << std::endl;
2115
2116         // fill in global commands
2117         globals.push_back(from_ascii("\\boxed"));
2118         globals.push_back(from_ascii("\\fbox"));
2119         globals.push_back(from_ascii("\\framebox"));
2120         globals.push_back(from_ascii("\\makebox"));
2121         globals.push_back(from_ascii("\\kern"));
2122         globals.push_back(from_ascii("\\xhookrightarrow"));
2123         globals.push_back(from_ascii("\\xhookleftarrow"));
2124         globals.push_back(from_ascii("\\xrightarrow"));
2125         globals.push_back(from_ascii("\\xRightarrow"));
2126         globals.push_back(from_ascii("\\xrightharpoondown"));
2127         globals.push_back(from_ascii("\\xrightharpoonup"));
2128         globals.push_back(from_ascii("\\xrightleftharpoons"));
2129         globals.push_back(from_ascii("\\xleftarrow"));
2130         globals.push_back(from_ascii("\\xLeftarrow"));
2131         globals.push_back(from_ascii("\\xleftharpoondown"));
2132         globals.push_back(from_ascii("\\xleftharpoonup"));
2133         globals.push_back(from_ascii("\\xleftrightarrow"));
2134         globals.push_back(from_ascii("\\xLeftrightarrow"));
2135         globals.push_back(from_ascii("\\xleftrightharpoons"));
2136         globals.push_back(from_ascii("\\xmapsto"));
2137         globals.push_back(from_ascii("\\split"));
2138         globals.push_back(from_ascii("\\gathered"));
2139         globals.push_back(from_ascii("\\aligned"));
2140         globals.push_back(from_ascii("\\alignedat"));
2141         globals.push_back(from_ascii("\\cases"));
2142         globals.push_back(from_ascii("\\substack"));
2143         globals.push_back(from_ascii("\\xymatrix"));
2144         globals.push_back(from_ascii("\\Diagram"));
2145         globals.push_back(from_ascii("\\subarray"));
2146         globals.push_back(from_ascii("\\array"));
2147         globals.push_back(from_ascii("\\sqrt"));
2148         globals.push_back(from_ascii("\\root"));
2149         globals.push_back(from_ascii("\\tabular"));
2150         globals.push_back(from_ascii("\\sideset"));
2151         globals.push_back(from_ascii("\\stackrel"));
2152         globals.push_back(from_ascii("\\stackrelthree"));
2153         globals.push_back(from_ascii("\\binom"));
2154         globals.push_back(from_ascii("\\choose"));
2155         globals.push_back(from_ascii("\\brace"));
2156         globals.push_back(from_ascii("\\brack"));
2157         globals.push_back(from_ascii("\\frac"));
2158         globals.push_back(from_ascii("\\over"));
2159         globals.push_back(from_ascii("\\nicefrac"));
2160         globals.push_back(from_ascii("\\unitfrac"));
2161         globals.push_back(from_ascii("\\unitfracthree"));
2162         globals.push_back(from_ascii("\\unitone"));
2163         globals.push_back(from_ascii("\\unittwo"));
2164         globals.push_back(from_ascii("\\infer"));
2165         globals.push_back(from_ascii("\\atop"));
2166         globals.push_back(from_ascii("\\lefteqn"));
2167         globals.push_back(from_ascii("\\boldsymbol"));
2168         globals.push_back(from_ascii("\\bm"));
2169         globals.push_back(from_ascii("\\color"));
2170         globals.push_back(from_ascii("\\normalcolor"));
2171         globals.push_back(from_ascii("\\textcolor"));
2172         globals.push_back(from_ascii("\\cfrac"));
2173         globals.push_back(from_ascii("\\cfracleft"));
2174         globals.push_back(from_ascii("\\cfracright"));
2175         globals.push_back(from_ascii("\\dfrac"));
2176         globals.push_back(from_ascii("\\tfrac"));
2177         globals.push_back(from_ascii("\\dbinom"));
2178         globals.push_back(from_ascii("\\tbinom"));
2179         globals.push_back(from_ascii("\\hphantom"));
2180         globals.push_back(from_ascii("\\phantom"));
2181         globals.push_back(from_ascii("\\vphantom"));
2182         globals.push_back(from_ascii("\\cancel"));
2183         globals.push_back(from_ascii("\\bcancel"));
2184         globals.push_back(from_ascii("\\xcancel"));
2185         globals.push_back(from_ascii("\\cancelto"));
2186         globals.push_back(from_ascii("\\smash"));
2187         globals.push_back(from_ascii("\\mathclap"));
2188         globals.push_back(from_ascii("\\mathllap"));
2189         globals.push_back(from_ascii("\\mathrlap"));
2190         globals.push_back(from_ascii("\\ensuremath"));
2191         MathWordList const & words = mathedWordList();
2192         MathWordList::const_iterator it2;
2193         //lyxerr << "Globals completion commands: ";
2194         for (it2 = words.begin(); it2 != words.end(); ++it2) {
2195                 if (it2->second.inset != "macro" && !it2->second.hidden) {
2196                         // macros are already read from MacroTable::globalMacros()
2197                         globals.push_back('\\' + it2->first);
2198                         //lyxerr << '\\' + it2->first << ' ';
2199                 }
2200         }
2201         //lyxerr << std::endl;
2202         sort(globals.begin(), globals.end());
2203 }
2204
2205
2206 MathCompletionList::~MathCompletionList()
2207 {
2208 }
2209
2210
2211 size_type MathCompletionList::size() const
2212 {
2213         return locals.size() + globals.size();
2214 }
2215
2216
2217 docstring const & MathCompletionList::data(size_t idx) const
2218 {
2219         size_t lsize = locals.size();
2220         if (idx >= lsize)
2221                 return globals[idx - lsize];
2222         else
2223                 return locals[idx];
2224 }
2225
2226
2227 std::string MathCompletionList::icon(size_t idx) const
2228 {
2229         // get the latex command
2230         docstring cmd;
2231         size_t lsize = locals.size();
2232         if (idx >= lsize)
2233                 cmd = globals[idx - lsize];
2234         else
2235                 cmd = locals[idx];
2236
2237         // get the icon name by stripping the backslash
2238         docstring icon_name = frontend::Application::mathIcon(cmd.substr(1));
2239         if (icon_name.empty())
2240                 return std::string();
2241         return "math/" + to_utf8(icon_name);
2242 }
2243
2244 std::vector<docstring> MathCompletionList::globals;
2245
2246 } // namespace lyx